Bonner sphere measurements of high-energy neutron spectra from a 1 GeV/u 56Fe ion beam on an aluminum target and comparison to spectra obtained by Monte Carlo simulations

• DOI: 10.3389/fphy.2024.1456472
• Publication Date: 2024-09-18T14:45:22Z
• Authors: Augusto Di Chicco; Felix Horst; Daria Boscolo; Christoph Schuy; Uli Weber; Miroslav Zboril
• Keywords: Bonner sphere

The goal of this work is to characterize the secondary neutron spectra produced by 1 GeV/u 56 Fe beam colliding with a thick cylindric aluminum target and perform quantitative comparison simulated results obtained Monte Carlo codes. measurements were performed using extended-range Bonner sphere spectrometers at two positions (15° 40°) respect direction. radiation field was four codes (FLUKA, MCNP6, Geant4 PHITS) several physical models nuclei transport interaction. Neutron proton energy distributions for experimental measurement positions. spectra, together data measured spectrometers, after carrying out correction contributions induced protons, used as input MAXED spectrum unfolding code obtain spectra. Unfolded compared ones carry analysis performance chosen their corresponding models. This showed that, because uncertainties models, there are no unique solutions each location, but range where true probably lie. deviations between 4.23% 8.42% some Regarding total integral values fluence ambient equivalent dose, unfolded lower than 2%.